./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_3_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a ....................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_8.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a ..................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 23:54:38,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 23:54:38,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 23:54:38,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 23:54:38,972 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 23:54:38,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 23:54:38,974 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 23:54:38,975 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 23:54:38,976 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 23:54:38,977 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 23:54:38,977 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 23:54:38,978 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 23:54:38,978 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 23:54:38,979 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 23:54:38,980 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 23:54:38,981 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 23:54:38,985 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 23:54:38,989 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 23:54:38,990 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 23:54:38,993 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 23:54:38,997 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 23:54:38,998 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 23:54:38,999 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 23:54:39,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 23:54:39,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 23:54:39,005 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 23:54:39,006 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 23:54:39,007 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 23:54:39,007 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 23:54:39,008 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 23:54:39,008 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 23:54:39,009 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 23:54:39,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 23:54:39,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 23:54:39,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 23:54:39,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 23:54:39,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 23:54:39,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 23:54:39,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 23:54:39,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 23:54:39,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 23:54:39,015 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 23:54:39,033 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 23:54:39,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 23:54:39,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 23:54:39,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 23:54:39,034 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 23:54:39,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 23:54:39,035 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 23:54:39,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 23:54:39,035 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 23:54:39,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 23:54:39,035 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 23:54:39,035 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 23:54:39,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 23:54:39,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 23:54:39,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 23:54:39,036 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 23:54:39,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 23:54:39,036 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 23:54:39,036 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 23:54:39,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 23:54:39,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 23:54:39,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 23:54:39,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:54:39,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 23:54:39,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 23:54:39,043 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 23:54:39,044 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 23:54:39,044 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 23:54:39,044 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 23:54:39,044 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 23:54:39,044 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2021-08-25 23:54:39,295 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 23:54:39,313 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 23:54:39,315 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 23:54:39,316 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 23:54:39,317 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 23:54:39,317 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-08-25 23:54:39,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa392fbde/0261af506a3e42949c9bc72bfe947a12/FLAG58e1d5d19 [2021-08-25 23:54:39,742 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 23:54:39,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-08-25 23:54:39,748 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa392fbde/0261af506a3e42949c9bc72bfe947a12/FLAG58e1d5d19 [2021-08-25 23:54:39,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa392fbde/0261af506a3e42949c9bc72bfe947a12 [2021-08-25 23:54:39,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 23:54:39,765 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 23:54:39,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 23:54:39,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 23:54:39,769 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 23:54:39,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:54:39" (1/1) ... [2021-08-25 23:54:39,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c8cdf16 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:39, skipping insertion in model container [2021-08-25 23:54:39,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:54:39" (1/1) ... [2021-08-25 23:54:39,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 23:54:39,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 23:54:39,926 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-08-25 23:54:39,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:54:39,934 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 23:54:39,956 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-08-25 23:54:39,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:54:39,988 INFO L208 MainTranslator]: Completed translation [2021-08-25 23:54:39,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:39 WrapperNode [2021-08-25 23:54:39,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 23:54:39,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 23:54:39,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 23:54:39,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 23:54:39,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:39" (1/1) ... [2021-08-25 23:54:40,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:39" (1/1) ... [2021-08-25 23:54:40,023 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 23:54:40,024 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 23:54:40,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 23:54:40,025 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 23:54:40,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:39" (1/1) ... [2021-08-25 23:54:40,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:39" (1/1) ... [2021-08-25 23:54:40,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:39" (1/1) ... [2021-08-25 23:54:40,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:39" (1/1) ... [2021-08-25 23:54:40,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:39" (1/1) ... [2021-08-25 23:54:40,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:39" (1/1) ... [2021-08-25 23:54:40,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:39" (1/1) ... [2021-08-25 23:54:40,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 23:54:40,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 23:54:40,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 23:54:40,063 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 23:54:40,064 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:39" (1/1) ... [2021-08-25 23:54:40,068 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:54:40,073 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 23:54:40,086 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-25 23:54:40,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-25 23:54:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 23:54:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 23:54:40,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 23:54:40,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 23:54:40,303 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 23:54:40,303 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-08-25 23:54:40,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:54:40 BoogieIcfgContainer [2021-08-25 23:54:40,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 23:54:40,305 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 23:54:40,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 23:54:40,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 23:54:40,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 11:54:39" (1/3) ... [2021-08-25 23:54:40,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b578956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:54:40, skipping insertion in model container [2021-08-25 23:54:40,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:39" (2/3) ... [2021-08-25 23:54:40,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b578956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:54:40, skipping insertion in model container [2021-08-25 23:54:40,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:54:40" (3/3) ... [2021-08-25 23:54:40,309 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2021-08-25 23:54:40,313 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 23:54:40,313 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 23:54:40,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 23:54:40,347 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-25 23:54:40,348 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 23:54:40,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:54:40,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-25 23:54:40,359 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:54:40,359 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:54:40,360 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:54:40,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:54:40,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-08-25 23:54:40,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:54:40,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304265708] [2021-08-25 23:54:40,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:54:40,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:54:40,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:54:40,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:54:40,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:54:40,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304265708] [2021-08-25 23:54:40,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304265708] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:54:40,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:54:40,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-25 23:54:40,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345630607] [2021-08-25 23:54:40,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-25 23:54:40,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:54:40,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-25 23:54:40,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:54:40,483 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:54:40,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:54:40,492 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-08-25 23:54:40,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-25 23:54:40,492 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-25 23:54:40,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:54:40,497 INFO L225 Difference]: With dead ends: 31 [2021-08-25 23:54:40,497 INFO L226 Difference]: Without dead ends: 13 [2021-08-25 23:54:40,498 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:54:40,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-25 23:54:40,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-25 23:54:40,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:54:40,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-08-25 23:54:40,516 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-08-25 23:54:40,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:54:40,516 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-08-25 23:54:40,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:54:40,523 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-08-25 23:54:40,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-25 23:54:40,523 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:54:40,523 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:54:40,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 23:54:40,524 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:54:40,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:54:40,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-08-25 23:54:40,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:54:40,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765974219] [2021-08-25 23:54:40,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:54:40,525 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:54:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:54:40,538 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 23:54:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:54:40,562 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-25 23:54:40,563 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 23:54:40,564 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 23:54:40,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 23:54:40,568 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 23:54:40,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 11:54:40 BoogieIcfgContainer [2021-08-25 23:54:40,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 23:54:40,581 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 23:54:40,581 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 23:54:40,581 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 23:54:40,582 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:54:40" (3/4) ... [2021-08-25 23:54:40,584 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-25 23:54:40,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 23:54:40,585 INFO L168 Benchmark]: Toolchain (without parser) took 819.22 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.8 MB in the beginning and 44.4 MB in the end (delta: -12.6 MB). Peak memory consumption was 839.7 kB. Max. memory is 16.1 GB. [2021-08-25 23:54:40,586 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 36.7 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:54:40,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 223.87 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.6 MB in the beginning and 51.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:54:40,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.76 ms. Allocated memory is still 67.1 MB. Free memory was 51.0 MB in the beginning and 49.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:54:40,587 INFO L168 Benchmark]: Boogie Preprocessor took 37.18 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 48.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:54:40,587 INFO L168 Benchmark]: RCFGBuilder took 242.19 ms. Allocated memory is still 67.1 MB. Free memory was 48.1 MB in the beginning and 36.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-25 23:54:40,588 INFO L168 Benchmark]: TraceAbstraction took 275.37 ms. Allocated memory is still 67.1 MB. Free memory was 35.5 MB in the beginning and 44.7 MB in the end (delta: -9.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:54:40,588 INFO L168 Benchmark]: Witness Printer took 2.54 ms. Allocated memory is still 67.1 MB. Free memory was 44.7 MB in the beginning and 44.4 MB in the end (delta: 294.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:54:40,591 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 36.8 MB in the beginning and 36.7 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 223.87 ms. Allocated memory was 54.5 MB in the beginning and 67.1 MB in the end (delta: 12.6 MB). Free memory was 31.6 MB in the beginning and 51.0 MB in the end (delta: -19.5 MB). Peak memory consumption was 7.1 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.76 ms. Allocated memory is still 67.1 MB. Free memory was 51.0 MB in the beginning and 49.4 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.18 ms. Allocated memory is still 67.1 MB. Free memory was 49.4 MB in the beginning and 48.3 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 242.19 ms. Allocated memory is still 67.1 MB. Free memory was 48.1 MB in the beginning and 36.1 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 275.37 ms. Allocated memory is still 67.1 MB. Free memory was 35.5 MB in the beginning and 44.7 MB in the end (delta: -9.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 2.54 ms. Allocated memory is still 67.1 MB. Free memory was 44.7 MB in the beginning and 44.4 MB in the end (delta: 294.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 225.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 5.4ms, AutomataDifference: 23.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9.0ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 5.7ms SsaConstructionTime, 24.5ms SatisfiabilityAnalysisTime, 27.3ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-25 23:54:40,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 23:54:42,096 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-25 23:54:42,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 23:54:42,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 23:54:42,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 23:54:42,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 23:54:42,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 23:54:42,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 23:54:42,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 23:54:42,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 23:54:42,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 23:54:42,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 23:54:42,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 23:54:42,179 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-25 23:54:42,193 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 23:54:42,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 23:54:42,193 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 23:54:42,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 23:54:42,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 23:54:42,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 23:54:42,195 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 23:54:42,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 23:54:42,195 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 23:54:42,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 23:54:42,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 23:54:42,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 23:54:42,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 23:54:42,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 23:54:42,196 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-25 23:54:42,196 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-25 23:54:42,196 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 23:54:42,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 23:54:42,196 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 23:54:42,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 23:54:42,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 23:54:42,200 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 23:54:42,200 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 23:54:42,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:54:42,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 23:54:42,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 23:54:42,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 23:54:42,202 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-25 23:54:42,203 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-25 23:54:42,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 23:54:42,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 23:54:42,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-25 23:54:42,203 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e7a5c2d38e9221fb261a8b3d947e8e6a8fda84a [2021-08-25 23:54:42,441 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 23:54:42,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 23:54:42,455 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 23:54:42,456 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 23:54:42,457 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 23:54:42,457 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-08-25 23:54:42,504 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b5a0df2/89acb51529d94ed2b2afe90c71167eed/FLAGef54885be [2021-08-25 23:54:42,798 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 23:54:42,802 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_8.i [2021-08-25 23:54:42,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b5a0df2/89acb51529d94ed2b2afe90c71167eed/FLAGef54885be [2021-08-25 23:54:43,234 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19b5a0df2/89acb51529d94ed2b2afe90c71167eed [2021-08-25 23:54:43,237 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 23:54:43,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 23:54:43,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 23:54:43,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 23:54:43,248 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 23:54:43,249 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:54:43" (1/1) ... [2021-08-25 23:54:43,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d82c874 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:43, skipping insertion in model container [2021-08-25 23:54:43,251 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:54:43" (1/1) ... [2021-08-25 23:54:43,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 23:54:43,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 23:54:43,362 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-08-25 23:54:43,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:54:43,372 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 23:54:43,396 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_8.i[1266,1279] [2021-08-25 23:54:43,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:54:43,418 INFO L208 MainTranslator]: Completed translation [2021-08-25 23:54:43,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:43 WrapperNode [2021-08-25 23:54:43,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 23:54:43,420 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 23:54:43,420 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 23:54:43,420 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 23:54:43,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:43" (1/1) ... [2021-08-25 23:54:43,443 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:43" (1/1) ... [2021-08-25 23:54:43,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 23:54:43,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 23:54:43,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 23:54:43,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 23:54:43,471 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:43" (1/1) ... [2021-08-25 23:54:43,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:43" (1/1) ... [2021-08-25 23:54:43,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:43" (1/1) ... [2021-08-25 23:54:43,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:43" (1/1) ... [2021-08-25 23:54:43,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:43" (1/1) ... [2021-08-25 23:54:43,495 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:43" (1/1) ... [2021-08-25 23:54:43,497 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:43" (1/1) ... [2021-08-25 23:54:43,501 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 23:54:43,502 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 23:54:43,502 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 23:54:43,502 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 23:54:43,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:43" (1/1) ... [2021-08-25 23:54:43,507 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:54:43,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 23:54:43,519 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-25 23:54:43,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-25 23:54:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-25 23:54:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 23:54:43,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 23:54:43,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 23:54:59,358 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 23:54:59,359 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-08-25 23:54:59,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:54:59 BoogieIcfgContainer [2021-08-25 23:54:59,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 23:54:59,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 23:54:59,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 23:54:59,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 23:54:59,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 11:54:43" (1/3) ... [2021-08-25 23:54:59,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24420a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:54:59, skipping insertion in model container [2021-08-25 23:54:59,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:54:43" (2/3) ... [2021-08-25 23:54:59,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24420a08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:54:59, skipping insertion in model container [2021-08-25 23:54:59,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:54:59" (3/3) ... [2021-08-25 23:54:59,365 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_8.i [2021-08-25 23:54:59,368 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 23:54:59,369 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 23:54:59,395 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 23:54:59,400 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-25 23:54:59,400 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 23:54:59,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:54:59,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-25 23:54:59,416 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:54:59,416 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:54:59,417 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:54:59,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:54:59,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1427287630, now seen corresponding path program 1 times [2021-08-25 23:54:59,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 23:54:59,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031238111] [2021-08-25 23:54:59,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:54:59,429 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 23:54:59,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 23:54:59,430 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 23:54:59,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-25 23:55:01,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:55:02,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-25 23:55:02,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 23:55:02,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:55:02,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 23:55:02,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:55:02,309 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 23:55:02,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031238111] [2021-08-25 23:55:02,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2031238111] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 23:55:02,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:55:02,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-25 23:55:02,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540852683] [2021-08-25 23:55:02,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-25 23:55:02,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 23:55:02,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-25 23:55:02,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:55:02,324 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:55:02,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:55:02,332 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-08-25 23:55:02,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-25 23:55:02,333 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-08-25 23:55:02,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:55:02,337 INFO L225 Difference]: With dead ends: 31 [2021-08-25 23:55:02,337 INFO L226 Difference]: Without dead ends: 13 [2021-08-25 23:55:02,339 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:55:02,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-08-25 23:55:02,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-08-25 23:55:02,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:55:02,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2021-08-25 23:55:02,357 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 12 [2021-08-25 23:55:02,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:55:02,357 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2021-08-25 23:55:02,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:55:02,357 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2021-08-25 23:55:02,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-08-25 23:55:02,358 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:55:02,358 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:55:02,424 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-25 23:55:02,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 23:55:02,559 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:55:02,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:55:02,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1034260620, now seen corresponding path program 1 times [2021-08-25 23:55:02,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 23:55:02,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [913052208] [2021-08-25 23:55:02,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:55:02,560 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 23:55:02,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 23:55:02,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 23:55:02,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-25 23:57:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:57:49,886 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 23:58:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:58:12,713 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-25 23:58:12,713 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 23:58:12,714 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 23:58:12,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-25 23:58:12,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 23:58:12,920 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 23:58:12,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 11:58:12 BoogieIcfgContainer [2021-08-25 23:58:12,935 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 23:58:12,936 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 23:58:12,936 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 23:58:12,936 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 23:58:12,936 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:54:59" (3/4) ... [2021-08-25 23:58:12,937 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-25 23:58:12,960 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 23:58:12,960 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 23:58:12,962 INFO L168 Benchmark]: Toolchain (without parser) took 209719.14 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 32.3 MB in the beginning and 35.7 MB in the end (delta: -3.4 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2021-08-25 23:58:12,962 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 37.0 MB in the beginning and 37.0 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:58:12,962 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.88 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 32.1 MB in the beginning and 52.8 MB in the end (delta: -20.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2021-08-25 23:58:12,963 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.08 ms. Allocated memory is still 69.2 MB. Free memory was 52.8 MB in the beginning and 51.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:58:12,963 INFO L168 Benchmark]: Boogie Preprocessor took 35.40 ms. Allocated memory is still 69.2 MB. Free memory was 51.1 MB in the beginning and 49.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:58:12,964 INFO L168 Benchmark]: RCFGBuilder took 15858.57 ms. Allocated memory is still 69.2 MB. Free memory was 49.5 MB in the beginning and 51.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. [2021-08-25 23:58:12,964 INFO L168 Benchmark]: TraceAbstraction took 193573.76 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 37.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-08-25 23:58:12,964 INFO L168 Benchmark]: Witness Printer took 24.85 ms. Allocated memory is still 69.2 MB. Free memory was 37.8 MB in the beginning and 35.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:58:12,966 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 54.5 MB. Free memory was 37.0 MB in the beginning and 37.0 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 174.88 ms. Allocated memory was 54.5 MB in the beginning and 69.2 MB in the end (delta: 14.7 MB). Free memory was 32.1 MB in the beginning and 52.8 MB in the end (delta: -20.7 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.08 ms. Allocated memory is still 69.2 MB. Free memory was 52.8 MB in the beginning and 51.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.40 ms. Allocated memory is still 69.2 MB. Free memory was 51.1 MB in the beginning and 49.5 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 15858.57 ms. Allocated memory is still 69.2 MB. Free memory was 49.5 MB in the beginning and 51.3 MB in the end (delta: -1.8 MB). Peak memory consumption was 18.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 193573.76 ms. Allocated memory is still 69.2 MB. Free memory was 50.8 MB in the beginning and 37.8 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Witness Printer took 24.85 ms. Allocated memory is still 69.2 MB. Free memory was 37.8 MB in the beginning and 35.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L35] x = x - f(x)/fp(x) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L37] x = x - f(x)/fp(x) [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 193524.4ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.7ms, AutomataDifference: 23.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 33.4ms SsaConstructionTime, 169640.2ms SatisfiabilityAnalysisTime, 444.9ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-25 23:58:13,147 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...